Compressor.



G. F. STEEDMAN.

COMPRESSOR. APPLICATION FILED MAY 4. 1914.

Patented Now 2, 1915.

UNITED STATES PATENT OFFICE.

GEORGE F. STEEDMAN, OF ST. LOUIS, MISSOURI.

COMPRESSOR. I

Application filed May 4, 1914.

To all whom it may concern:

. Be it known that I, GEORGE F. STEEDMAN, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Compressors; of Which the follow-ing is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relatesto compressors of the type described in United States Patent #77 0,785, granted to E. H. Steedman, September 27, 190%, wherein the cylinder is provided with a water-jacketed head. In compressors of the type described in the patent above mentioned the valve mechanism is mounted on the head of the cylinder in such a manner that it is necessary to remove the head of the cylinder whenever it isdesired to lnspect the suction valves, or adjust or replace parts of the valves or the valve mechanism. Consequently, it is not possible to in:

spect the suction valves or remove or make any change in the valve mechanism when the compressor is in operation.

The main ob ect of my present invention 'is to provide a compressor of the general type referred to, which is so designed that the suction valves can be inspected when the compressor is in operation and both the suction and discharge valves can be replaced easily. To this end I have devised a compressor in which the water-jacketed head of the cylinder is provided with removable closure members for the valve chambers, which closures can be taken oif so as to enable the suction valves to be inspected or both valves removed without removing the head of the cylinder.

Another object is to provide a compressor in which the head of the cylinder is providedwith a removable closure for the suction Valve chamber that carries an actuating de vice which forms part of the mechanism for controlling the movement of the suction valve. And still another object is to provide a compressor in which a valve seat member that is secured to the head of the cylinder carries or supportsthe means that holds the suction valve seated, the head being provided with a removable. closure for the suction valve chamber that can be taken off without disturbing the suction valve or the means that retains said valve on its seat.

Other objects and desirable features of my invention will be hereinafter pointed out.

Specification of Letters Patent.

Patented Nov. 2, 1915. Serial No. 836,336.

' designates the removable head of one of the cylinders B, which head is provided with a chamber 1, throughwhich water circulates, and also with a suction valve chamber 2 and adischarge valve chamber 3. The suction valve C preferablv consists of a thin metallic disk that is normally held pressed against a valve seat member 5 by means of a spring 6. Said valve seat member 5 is screwed into the head A of the cylinder, as shown in Figs. 2 and 3, and it supports a stop bolt 7 that is provided at its lower end with ahead 8 having a recess which receives the spring 6 that normally holds the suction valve seated, said stop bolt being connected to the valve seat 5 in any suitable manner, as, for example, by a screw-threaded portion on the said bolt that is screwed into the center hub of the valve member 5, which is of skeleton construction. The stop bolt 7 projects upwardly through the suction valve chamber 2 and acts as a guide for the thimble 9, which cooperates with the lever 10 that forms part of the mechanism for governing the valve, as clearly described in the patent above mentioned, one end of said lever 10 being .acted upon by a governor plunger 11 which moves the lever'lOand thimble 9 against the force of the spring 12 that is interposed between the thimble 9 and the center hub of the valve seat member 5, as shown in Fig. 3.- The suction valve chamber 2 is provided with a removable closure 13 that can be taken off so as to enable the suction valve to'be'inspected when the compressor is in operation, or when it is desired to remove sa1d valves. Said closure 13 may be retained in position in various'ways, but I prefer to securely clamp said closure in position by means of a nut 14 mounted on the upper end of the bolt 7, which bolt passes through an opening in the closure 13. The closure 13 is preferably provided with'a depending- .-with whichthe closure 13 cooperates.

'- mally held pressed against a valve seat mem-' ber 19fby means of a spring 20, said valve seat member being screwed into the head of the cylinder and said spring cooperating With an abutting member 21,-carried by a removable closure 22 for the discharge valve chamber 3.

One desirable feature of a compressor of the construction above described is, that the suction valve can ,be inspected easily while .the compressor is in operation simply by removing the closure 13 for the suction valve chamber. And another desirable feature of such a compressor is, that it is not necessary to remove the head of the cylinder when repairs or replacement of both-valves or of the suction valve controlling lever 10 is necessary.

Having, thus described I claim is:"

1. In a compressor, the combination of a cylinder provided with a head that has a suction valve chamber, a removable closure my invention, what for an opening 'in said chamber through whlch the suction valve can be inspected or 1 removed, a lever that cooperates with a suction valve governing device that is located at a point removed from the suction valve opening, said lever being carried by said re movable closure and arranged inside of said valve chamber, and means for preventing said closure from being arranged in such a.

position that said lever is incorrectly positioned with respect to said governing device.

2. In a compressor, the combination of a cylinder provided with a head that has a suction valve chamber formed therein, a removable device onthe head that normally closes an opening through which the suction valve can be inspected or removed, a valve seat member connected to the head, a suction valve cooperating with said member, means supported by said member for holding the suction valve seated, and a lever that cooperates with a suction valve governing device arranged some distance away from said suction valve, said lever being pivotally mounted on said closure and extending transversely of the valve.

3. In a compressor, the combination of a cylinder provided with a head that'has a suction valve chamber, a valve seat member that can be inserted or removed without removing the head, a suction valve, asuction valve spring for keeping the valve normally seated, a stop member integrally attached to said valve seat member and provided with an annular recess for receiving saidsprinfg, an easily removable closure member covering the suction valve chamber, a governing device cooperating with the suction valve and located some distance away therefrom, and a lever that forms the connection between said suction valve and said governing device, said lever being pivotally mounted on said closure member andlying within said valve chamber.

4. In a-compressor, the combmatlon of a cylinder provided with a head that has a suction valve chamber, a suction valve seat that can be inserted and removed without removing the head, a disk suction valve, a suction valve spring, a stop bolt attached to said valve seat and removable therewith,

provided with a recess in its head to receive the suction valve spring, a thiinble member sliding on said stop bolt stem above the valve seat and arranged to cooperate with the governing mechanism to hold the suction valve from 1ts seat, a spring around said stop bolt stem to hold thle thimble member normally away from the suction valve, a governing means arranged inside of said valve chamber,- and a readily removable closure for the suction valve chamber.

In testimony whereof I hereunto aflix my signature in the-presence of two witnesses,

this first dayof May 1914.

. GEORGE F. STEEDMAN.

Witnesses: I v

R. E. WINKLER,

L. D. BUoKLEs. 

